GIMP :: Transparency (Alpha To Selection) - Remove White Background From Images

Aug 20, 2011

For quite some time I've been trying to find the best way to remove a white background from images. I've checked out the sticky thread on this forum and as my image isn't of great quality and because it features quite a lot of white that won't apply.

Recently I found this tutorial which is supposed to work great (as seen in the comments). However, I think that because of a GIMP update that won't apply anymore somehow. I was hoping you guys might know what was causing it.

Everything works well until I get to step 7, where I have to select to Alpha. There it selects just the outlines, but my selection includes inner parts of the image, not just the background. And then after I invert and delete, the white that remains still has transparent parts that show up on the upper layer. So, am I doing something wrong with the Alpha to Selection, is that tutorial updated or is there a better way to remove the background from ie. a logo with just one background colour which isn't of great quality.

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GIMP :: Using Selection Deleting To Transparency Via Alpha Channel

Dec 12, 2012

I have removed the background from a photo using selection deleting to transparency via alpha channel. My dog was left. I then exported to png. When I try to upload the dog to use in a label, (Open Office), the back ground turns to white.

What am I doing wrong?

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GIMP :: How To Remove Stray Pixels On White Background

Nov 3, 2013

I rebuilt my line on white background from Rich2005 and Ofnuts. My latest version is darker, smoother higher res and wider (see attached).

The problem now are stray pixels, many of them unattached to the line itself. I spent a lot of time with an eraser, but still haven't gotten them all. THERE MUST BE A BETTER WAY!

I found this excellent link on the subject. [URL] RobA even has a script to do what I want. However, I don't think it is GIMP 2.8 compatible, as I can't seem to find it to run it.

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Dec 6, 2011

png texture with alpha channel but the transparency seems to be white.

How do I let the transparency in the png texture look through to the background?(alpha blend)

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Photoshop :: Alpha Transparency? Like Black 0%, White 100% Transp. Etc.

Jun 17, 2006

How can I set transparency like when color is brighter it will be more transparent, eg. white is fully transparent, black is non-transparent, gray is 50% transparent, etc..

I would save png after that.

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GIMP :: Remove Background Of Shadowed / Low-resolution Or More Complex Images

May 24, 2011

I am trying to create a network infrastructure diagram for where Iwork with Diagram.

For this I am putting into the diagram, images of: servers, switches,racks and so on. What I wish for those images is to have transparent background. So far, I've been able to find decent resolution imageswhich it's because I've started with the latest hardware.Here's an example, let's say for our Dell PowerEdge 6850 servers if found this: [URL] ....

which by fuzzy selecting the white background, with a threshold of15.0 and some selection subtractions I've been able to turn to: [URL] .... which is nice for what I wish to use it for.

Now, I've been able to handle some easy likewise situations but nowI've reached the vintage hardware and got bad results. Let me show an example image: [URL] .....

This is more difficult to make it look as I wish since it's resolution it's not decent and it also has a shadow effect which hardens a precise initial selection which can then be worked out to a better result.

After some efforts I either end up with a pixelized image or with a severely chopped image.

So, my question is how could I achieve the desired result for this and such images?

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GIMP :: Black Alpha (RGB+A) Transparency?

Dec 7, 2011

making a alpha channel transparency; Funny thing is. I made it work once a few days ago. I went to bed and forgot to write down how i did it (Tried everything, almost)

In the link right here [URL] n i have 4 files; Q3a_arrow_gimp_ver4.tga (TGA that works as i want it, you'll notice ALL the alpha channels have a black layer channel in the channels tab, how do i recreate that?) Q3a_arrow_methodtry.tga (tried to recreate with THIS tutorial [URL] with no success P.S. i tried loooads of tutorials but this recreation seems rather close to the working .TGA i need) Q3a_arrow.ai (sourcematerial all vector from Adobe Illustrator) Q3a_arrow.png (picture with transparency intact if needed for comparison)

So; Now... What i did to make the working picture was making a .PNG - drag it into gimp.. I recall doing some Alpha and or masking or selection thing with it, then rendered it for .TGA since Illustrator does not support the kind of .TGA i needed. Worked flawlessly in the engine where i use a function called alphafunc GE128 (blend with black as invisible layer and white as solid)

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GIMP :: Alpha Channels And Exporting Transparency

Nov 25, 2012

Basically, I am trying to use an alpha layer/channel to export a picture that is transparent except for a grass clump that is colored green over the alpha layer. So the picture looks like a solid green rectangle, but is actually a green blade of grass.

Problem is, I cannot get the alpha layer to work. I can't follow the tutorial as it is in photoshop, and random videos on-line haven't worked.

(Here is the tutorial: [URL]...... from 08:40 - 09:30)

(I have also attached my practice file as a TGA)

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GIMP :: Make Grayscale Image Into Alpha Transparency Channel

Oct 21, 2012

Is there any way I can directly make a grayscale image into an alpha transparency channel?

I mean, NOT involving selection? Because selection by color to layer mask,is really difficult what I need to do the selection threshold.

Why is it easy to turn an alpha channel into a grayscale image but not the reverse?

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GIMP :: Creating 32bit PNG Image With Alpha-channel Transparency

Dec 15, 2011

I already have an image file in png format..which I want to use as an application launcher icon for my android application.

The android specifies image with following properties for the launcher icon(Will need 4 different image to support different screen size in mobile devices)

Launcher icons should be 32-bit PNGs with an alpha channel for transparency. The finished launcher icon dimensions corresponding to a given generalized

Screen density are shown in the table below.
1. 36 * 36 px
2. 48 * 48 px
3. 72 * 72 px
4. 96 * 96 px

I would like to create 4 png files(with specifications mentioned above) from the already existing image file. How do I do that in GIMP.

I am completely novice to image editing(Never touched any image editing software before) and not sure how to achieve this in GIMP.

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GIMP :: Edit Original Layer Below Alpha Transparency Or Adding Layers

Sep 23, 2011

Basically just want to make the middle separating line in the following image:

Identical to (same degree of horizontal fadeout into transparency):

I have spent hours on it trying to edit the original layer below the alpha transparency or adding layers, getting nowhere.

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Revit :: Cloud Rendering - White Background / Alpha Channel

Jul 17, 2012

I'm attempting to render a series of images in the cloud and my plan is to take these images into Photoshop so that I can apply a background from an image I possess.
 
To do this I need the background to be a plain white background, export as a TIFF or PNG, then add an alpha channel in Photoshop. The problem is that whatever settings I apply in Revit, the cloud rendering always gives me the standard grey / blue horizon background. I have changed the render settings using the render setup, through the view properties, through the graphic display, still no joy....

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Sep 22, 2013

Remove the text and the white background and fill it with its respective background ?

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Illustrator :: Transparency Looks Different On White Background

Nov 19, 2012

Why do transparent objects look different on white background vs no background like the image below?

If I flatten the transparency both sides of the gradient object looks like it's on a white background.

If I print it there's no difference.

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GIMP :: How To Remove Alpha Layer Without Changing Way Image Looks

Mar 17, 2011

I have a few images that I have saved from online that have an alpha layer in them. When I open them in GIMP, the checkerboard pattern makes it far too difficult to edit the image. When I try any of the obvious options for removing the alpha layer, the result looks awful.

How do I remove an alpha layer without changing the way that an image looks when it's viewed in an image viewer (or GIMP)?

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Jun 23, 2012

I have photo & graphic designer 7 and want to know if its possible to remove the background from a file and save with transparency?

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Photoshop :: Background Question [White To Transparency]

Feb 7, 2008

i have an image which is a large scanned hand-drawn housing layout, simply black pen outlines on a white background.

is there a way i can automatically turn the whole white background into transparent? i know how to use background eraser, but it would take me about a week to manually go round the whole image picking out the white bits.

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GIMP :: Colour To Alpha Leaves Behind White Pixels?

Jul 19, 2011

Whenever I try to use the 'Colour to Alpha' tool, while it works on most of the image, I always get little white dots left behind, and have to spend ages use the eraser tool to get rid of them.

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GIMP :: Background Color To Alpha

Jul 4, 2013

When I color a the background of a photo to alpha it works just fine, I save it and export.

But when I try to open that same photo anywhere else the background is white .

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GIMP :: Transparency From Selection

Jun 25, 2012

I've to select an area ant turn the background transparent. Previously this was simple: select foreground, invert so background selected, toggle the transparency to 0% and hey presto, transparent background. Now when I do that it goes white.

I have tried using transparency - add alpha channel, and nothing happens: the menu stays there. Is that a glitch in y version of Gimp? and how can I now isolate the background and turn int transparent?

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GIMP :: Remove Transparency In Animated GIF?

Nov 11, 2012

I have an animated gif in which I put in a transparent background on all the frames a long time ago. But the edges of the images were all anti-aliased, so the edges look pretty bad on a much different background. Now I want to change it back to the black background on each frame, and the origial file is lost.

I went through each frame and used Select by color to select the transparency, then Edit to fill the selection with black. However, most frames have a layer boundary that is smaller than the image size because the animation does not always fill the screen. The background on each layer/frame is still transparent. When I saved that work, only the current layer boundary in each frame shows - the rest is transparent. So instead of an unchanging size image with a black background, I get a variable sized one.

So I thought I would remove the alpha channel from each frame. That looks ok while the whole image is open in GIMP, but when I go to save it, GIMP puts the alpha channels back in each frame! I don't know why it's doing that. But I did notice that when I preview the animation with the alpha channels removed, artifacts are visible when the next frame is smaller than the one before it, so I don't know that it's what I want, anyway.

Can I change the alpha channel from completely transparent to completely black? how to make the blackgrounds transparent, but I can't find anything about undoing it.

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CorelDRAW Graphics Suite X6 :: Image With White Background - Transparency?

Sep 9, 2013

I have been getting an immense number to images lately that have that wonderful white background. 

I simply use the masking tools and cut/paste back into Draw to get a transparent background, but it is time consuming.

Any way to do this with Replace Colors?

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GIMP :: How To Make Black And White Alpha Channel For A Video Game

Jan 31, 2013

I'm trying to make a texture for a model in a video game, and I want some of it to be transparent. This is done by editing a text file that tells the model to use the textures alpha channel. things in the alpha channel that are white are transparent and things that are black aren't.

But I don't really know how to edit the textures alpha. Here is a video I've seen that explains how to make one in photoshop: [URL]......

How to do exactly what he does in gimp? whenever i duplicate one of the rgb layers, it isn't black and white like it is in ps. i'm also not sure how to have it turn into the alpha.

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Photoshop :: Remove Blue / White Rectangle Leaving Blue Swirl On White Background

May 16, 2012

Ok so i have this image (Attached) im trying to remove the blue rectangle and the white rectangle leaving the blue swirl on the white back ground, iv tried using content aware but it comes out really bad, maybe im doing it wrong will some one be able to look at this for me, maybe it came out wrong because i have the blue swirl and content aware doesn't work correctly with it .

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GIMP :: Changing Background Of JPG Image Using Color To Alpha

Sep 21, 2013

First time using GIMP. Following the directions here: [URL] ......

Using, "Color to Alpha," I tried to select the background of my .jpg image. The background is white, the picture (logo) portion is silver. Because of the closeness in color, when I select white, the software selects the entire image to become alpha (transparent).

When I select the color of the picture, silver, I am able to select just the logo portion. How can I take the logo portion, which is now converted to transparent, and give it a black or transparent background, and then return the logo back to its former color silver. The logo is perfect, it is just that I recently switched my site from a white header to a black header and the image has a white background, so that does not look good.

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Photoshop :: How To Remove White Background

Jun 28, 2013

I am trying to incorporate some business logos into a brochure I am creating. The problem is, most of these logos have a white background. How can I remove this and make a transparent background?

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Photoshop :: Remove White Background

Aug 22, 2005

I need to remove a white background from a PS file that is just text. Calendar of 2006, actually. Need the text placed on a different background.

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Photoshop :: Remove White Background

Dec 16, 2006

I'm trying to remove the white background from this image, as well as the white in between all of the rings:

Then i want to change the color of the different colored rings.

I've tried to use the magic eraser, and the magic wand color select tool, but unless there are more options, or i'm using the MW wrong, they don't do what i want.

when trying to select the ring to change its color with the MW it does a sloppy job.

I'm using windows XP Pro, Photoshop CS2. way to do it in CorelDRAW X3,

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Apr 18, 2012

I have a pic that I want to remove the white background from so I can paste the main pic onto some thing else. How do I do that?

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Photoshop :: Remove Selection From Heterogeneous Background

Sep 4, 2013

Just a regular photo of a person on front and people and objects on the background. I tried different techniques but can't figure out how to make selection with all smallest details intact.

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GIMP :: How To Take White Background Off Of Picture Using Select Color On White

Feb 4, 2013

Okay so I'm trying to take the white background off of a picture using the select a color on white, but it takes out a lot or the fur and eyes(it's a picture of a cartoon cat) How can I remove the areas of can from the selection without removing the pieces of cat too.

It's creative commons, so I guess I can post screen shots...

The cat is from [URL]...

A general idea of the selected area

What happens when I take out the selected area

So how can I take the pieces of the cat out of the selected area so when I try to delete the background I don't get an invisible cat?

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